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GEORGE C. LATHRCI), 0 If DANVILIE, MICHIGAN.

Letters Patent No. 68,517, (lated S'epzcmlmr 3, 1867.

IMPROVEMENT IN SAWING MACHINES.

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TO ALL WHOM IT MAY CONCERN:A

Be it known that I, G. C. LATIIROP, of Danville, in the county ofIngham, and State of Michigan, have invented a new and improved Machinefor Sawing Wood; and I do hereby declare that the following is a full,clear, and exact description thereof, which will enable others skilledin the art to make and use .the same, reference being had tothe.accempanying drawings forming part of'this specification, ,in which-Iigure 1 represents a vertical longitudinal section ofmy improved sawingmachine.

Figure 2 is a vertical cross-section of the same, taken on the line x x,iig. l.

Similar letters of reference indicate like parts.

This invention relates to a hand-sawing machine, which can be operatedby one man, who is seated in a swinging chair, and which can beadj-usted on uneven groundso that it will always stand in a levelposition.

It consists in the use of an oscillating frame, to the lower end ofwhicha pitman is pivoted, to which the horizontal saw is attached. Bysetting the frame in motion, reciprocating motion will be imparted tothe saw. A seat is arranged in rear of the 'oscillating frame, so thatthe latter can be set in motion by a man sitting on .the seat, and usinghis hands and feet, or either, for the purpose. Springs are arranged onthe frame, which aid in moving the saw. The whole mechanism is held in astationary frame, which rests upon adjustable feet, whereby it can beset level on uneven ground.

A is a rectangular horizontal bed or frame, made of wood or othersuitable material. B B are two upright posts, which are secured in thebcd'A, opposite to each other, and which are steadied by means of bracesC C, while their upper ends are connected by a cross-har, D. E EarcA thefeet or supports of the frame A, andare provided with teeth, as shown intig. They are passed through slots vin the frame A, and are held inplace by pawls I". They can be adjusted up and down in the slots, andheld in any desired position by means of'the pawls. The frame'A can thusbe regulated, so as to be level at all times. G is an oblong fra-me,made of wood or other suitable material, and is hingedhetwecn thecross-heads X upon the braces C C, soas to oscillate around pins H, onwhich it is mounted. I is a spiral or other spring, by which the uppercross-bar of the frame G is connected with the cross-bar D, which springhas the tendency to keep the frame G in a vertical position. To thelower end of the frame G is hinged a rod, J, nto the end of which thesaw K is secured, as is clearly shown in fig. I. L is an upright guidefor the mdd, arranged on the frame A. M is a cross-bar, which isconnected with two bars N, which are hinged to the braces C, as shown.This bar M is made to` rest on the upper edge of the saw, and to forcethe same into the wooden block, and serves also to guide the saw, as itis provided with a slot for holding the same. On the side of the frame'G which is opposite'to the saw K are secured to the frame A two uprightcars or lugs, O, between which a cross-bar, P, is hung, so that it canturn in its bearings. To the bar I is secured a seat, Q, the rear cndoiwhich is pulled down 'by a spring, R.

A person seated ou the chair Q can easily grasp the upper cross-bar ofthe frame G with his hands, and place his feet upon the lower cross-barof the same, and thus an oscillating movement can be easily imparted tothe frame G, and consequently a reciprocating motion to the saw K. Thespring I facilitates the moving of the frame G as it pulls thc same intoa vertical position, Vand thus does half the move during each stroke. Tothe front Yof the frame G are secured wire bows onhandles Swhich areused to place' the `machine into the desired position. To these wiresare secured weightsl T, which serve the same purpose as the 'spring I,and materially facilitate the operation of the machine.

Having thus described my invention, what I claim as new and desire tesecure by Letters Patent, is`

1. The arrangement of the oscillating frame G, pivoted at its centreupon the cross-heads X, spring I, weight T, pivoted spring-seat (2,guide M, and saw K, as herein set forth for the purpose specified.

2. The adjustable toothed supports E, passing through the frame A, andthe pawls F, constructed and arranged as described, whereby the level ofthe machine is regulated as herein shown and described.

GEO. C. LATHROP.

Witnesses:

WILLIAM GREGG, A. H. WESTON.

